File
... 1968 - scientists had developed a new theory that combines the main ideas of continental drift and seafloor spreading Earth’s plates are composed of the crust and part of the upper mantle The less dense plates of the lithosphere “float” on the denser asthenosphere Earth’s plates can interact ...
... 1968 - scientists had developed a new theory that combines the main ideas of continental drift and seafloor spreading Earth’s plates are composed of the crust and part of the upper mantle The less dense plates of the lithosphere “float” on the denser asthenosphere Earth’s plates can interact ...
2008-himalayan-nursery-new - geology.byu.edu
... These new data provide the constraints needed to address key questions about the geodynamics of transition from subduction to collision. Questions include: 1) How is strain partitioned in the upper and lower plates? 2) What happens to the arc-forearc? 3) What controls vertical motions? 4) How does p ...
... These new data provide the constraints needed to address key questions about the geodynamics of transition from subduction to collision. Questions include: 1) How is strain partitioned in the upper and lower plates? 2) What happens to the arc-forearc? 3) What controls vertical motions? 4) How does p ...
Plate Tectonic Theory
... Rocky Mountains – formed due to ‘shallow’ subduction of oceanic lithosphere beneath western N. America. ...
... Rocky Mountains – formed due to ‘shallow’ subduction of oceanic lithosphere beneath western N. America. ...
Evidence for Sea-Floor Spreading
... point south instead of north The rock in the ocean is made of iron, which began as molten material ...
... point south instead of north The rock in the ocean is made of iron, which began as molten material ...
History of the Earth Chapter 2: The Hadean
... Basic Plate Tectonics • Earth’s “surface” (lithosphere) is broken into plates • Plates move on asthenosphere • “Geology happens” where the plates interact with one another ...
... Basic Plate Tectonics • Earth’s “surface” (lithosphere) is broken into plates • Plates move on asthenosphere • “Geology happens” where the plates interact with one another ...
Plate Tectonics
... 3.) Why would you expect to see similar rocks and rock structures on two landmasses that were connected at one time? ...
... 3.) Why would you expect to see similar rocks and rock structures on two landmasses that were connected at one time? ...
example from the Australian plate
... Notice that in this model, the Timor Trough is not the plate boundary, But a fordeep on the Australian margin. The polarity of subduction has flipped and the next scenario is an Andean margin along northern Australia! ...
... Notice that in this model, the Timor Trough is not the plate boundary, But a fordeep on the Australian margin. The polarity of subduction has flipped and the next scenario is an Andean margin along northern Australia! ...
Plate Boundarieskouts
... Plate and the North American Plate and it separates the African Plate from the South American Plate. ...
... Plate and the North American Plate and it separates the African Plate from the South American Plate. ...
Document
... Earth’s magnetism • Liquid OUTER CORE generates the magnetic field for the Earth • Earth’s magnetism is preserved in rocks • Iron minerals in the rocks line up and preserve the direction of the ...
... Earth’s magnetism • Liquid OUTER CORE generates the magnetic field for the Earth • Earth’s magnetism is preserved in rocks • Iron minerals in the rocks line up and preserve the direction of the ...
The Deepest Place on Earth
... The water in the trench is so cold it is almost freezing. Some areas in the trench are very hot, though. These areas are called hydrothermal vents. The vents are openings in the earth through which very hot water shoots up through the ocean floor like smoke from a chimney. The water from the vents i ...
... The water in the trench is so cold it is almost freezing. Some areas in the trench are very hot, though. These areas are called hydrothermal vents. The vents are openings in the earth through which very hot water shoots up through the ocean floor like smoke from a chimney. The water from the vents i ...
chapter 11 -- plate tectonics
... This theory helps explain continental ______, seafloor _________, AND provides a cause for these movements of the crust. The cause was what was lacking in the previous theories. The theory of plate tectonics states that the Earth’s continental and oceanic crust is broken up into sections. These sect ...
... This theory helps explain continental ______, seafloor _________, AND provides a cause for these movements of the crust. The cause was what was lacking in the previous theories. The theory of plate tectonics states that the Earth’s continental and oceanic crust is broken up into sections. These sect ...
Name - www .alexandria .k12 .mn .us
... states that Earth’s outer layer or _________________ is broken up into ________________. These plates hold ______________________ and _____________________. They are constantly __________________________. 9. Continents over time--BONUS QUESTION: Since the plates are constantly in motion, scientists ...
... states that Earth’s outer layer or _________________ is broken up into ________________. These plates hold ______________________ and _____________________. They are constantly __________________________. 9. Continents over time--BONUS QUESTION: Since the plates are constantly in motion, scientists ...
Theory of Plate Tectonics
... less dense continental plate • Subduction Zone: where the more dense plate slides under the less dense plate • VOLCANOES occur at subduction zones ...
... less dense continental plate • Subduction Zone: where the more dense plate slides under the less dense plate • VOLCANOES occur at subduction zones ...
Table 1. Plate Boundaries of an Unkn
... Table 4. Showing the Plate Boundaries in Cross Section On the figure below, draw a simple cross section of your plates in the subsurface. Use other figures in this chapter as a guide to the thicknesses of the crust and lithosphere and to the geometries typical for each type of plate boundary. Some f ...
... Table 4. Showing the Plate Boundaries in Cross Section On the figure below, draw a simple cross section of your plates in the subsurface. Use other figures in this chapter as a guide to the thicknesses of the crust and lithosphere and to the geometries typical for each type of plate boundary. Some f ...
1 MAY 2011 Oceanogra phy Ch 2 Plate Tectonics and the Ocean
... mixes with granite forms explosive, viscous, andesite in a continental arc. Example: Juan de Fuca plate produce the Cascade mts. Oceanic – Oceanic crust convergence. The older plate is subducted. Example: Marianna Trench. Basaltic lava, not very explosive. Examples: West Indies, Aleutian Islands. Co ...
... mixes with granite forms explosive, viscous, andesite in a continental arc. Example: Juan de Fuca plate produce the Cascade mts. Oceanic – Oceanic crust convergence. The older plate is subducted. Example: Marianna Trench. Basaltic lava, not very explosive. Examples: West Indies, Aleutian Islands. Co ...
Earthquake Occurrences in Different Tectonic Settings
... in California is a nearby example of a transform boundary, separating the Pacific from the North American plate. ...
... in California is a nearby example of a transform boundary, separating the Pacific from the North American plate. ...
Week 6 Quiz- Weathering, Soil, Plate Tectonics Name
... D. away from ____21. San Andreas fault in California is as example of _______________________. A. horizontal shear or strike slip fault C. convergent boundary B. divergent boundary D. none of the above ____22. Where does sea floor spreading happen? A. At the rift valley along the mid-ocean ridges. C ...
... D. away from ____21. San Andreas fault in California is as example of _______________________. A. horizontal shear or strike slip fault C. convergent boundary B. divergent boundary D. none of the above ____22. Where does sea floor spreading happen? A. At the rift valley along the mid-ocean ridges. C ...
Section 10.3 Plate Tectonics and Igneous Activity
... What provides the mechanism by which mantle rocks melt and plate motions magma is produced? ...
... What provides the mechanism by which mantle rocks melt and plate motions magma is produced? ...
Plate Tectonics ~ Chapter 19 Assignment
... cause Benioff zones of Earthquakes associated with trenches. It can also produce andesitic volcanoes, which forms volcanoes either on the edge of a continent or in an island arc. 21. Sea floor age – Where do we find the youngest seafloor? Where do we find the oldest sea-floor? The youngest is at the ...
... cause Benioff zones of Earthquakes associated with trenches. It can also produce andesitic volcanoes, which forms volcanoes either on the edge of a continent or in an island arc. 21. Sea floor age – Where do we find the youngest seafloor? Where do we find the oldest sea-floor? The youngest is at the ...
Dynamic Earth Webquest - www .alexandria .k12 .mn .us
... states that Earth’s outer layer or _________________ is broken up into ________________. These plates hold ______________________ and _____________________. They are constantly __________________________. 9. Continents over time--BONUS QUESTION: Since the plates are constantly in motion, scientists ...
... states that Earth’s outer layer or _________________ is broken up into ________________. These plates hold ______________________ and _____________________. They are constantly __________________________. 9. Continents over time--BONUS QUESTION: Since the plates are constantly in motion, scientists ...
Geodynamics of congested subduction zones
... (2014). Dynamics of continental accretion. Nature. doi:10.1038/nature13033 ...
... (2014). Dynamics of continental accretion. Nature. doi:10.1038/nature13033 ...
A Head
... 14 The edges of the continents seem to fit together. 15 Rocks in tropical areas show marks left by glaciers. 16 The oldest sea floor is no more than 200 million years old. 17 Similar fish fossils are found in freshwater sediments on both sides of the Atlantic. 18 The magnetic arrangement of the rock ...
... 14 The edges of the continents seem to fit together. 15 Rocks in tropical areas show marks left by glaciers. 16 The oldest sea floor is no more than 200 million years old. 17 Similar fish fossils are found in freshwater sediments on both sides of the Atlantic. 18 The magnetic arrangement of the rock ...
Plate Tectonics
... Oceanic-Continental: subduction zones, volcanoes along coast, deep trenches Oceanic-Oceanic: subduction zones, volcanic island arcs, deep trenches ...
... Oceanic-Continental: subduction zones, volcanoes along coast, deep trenches Oceanic-Oceanic: subduction zones, volcanic island arcs, deep trenches ...
Oceanic trench
The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor. They are also the deepest parts of the ocean floor. Oceanic trenches are a distinctive morphological feature of convergent plate boundaries, along which lithospheric plates move towards each other at rates that vary from a few mm to over ten cm per year. A trench marks the position at which the flexed, subducting slab begins to descend beneath another lithospheric slab. Trenches are generally parallel to a volcanic island arc, and about 200 km (120 mi) from a volcanic arc. Oceanic trenches typically extend 3 to 4 km (1.9 to 2.5 mi) below the level of the surrounding oceanic floor. The greatest ocean depth to be sounded is in the Challenger Deep of the Mariana Trench, at a depth of 11,034 m (36,201 ft) below sea level. Oceanic lithosphere moves into trenches at a global rate of about 3 km2/yr.